Already a while ago Roland Penner has send me an interesting patch which added a new check type (snapshots) in the Nagios/Monitoring plugin check_equallogic.

As the name of the type already describes it, this check type is used to check the reserved disk space on your Dell Equallogic SAN. 

This new features is available now and version 20120430 of check_equallogic has been released.

Big thanks to Roland for his contribution!